<template>
  <view>
    <!-- 使用自定义搜索组件 -->
<!--    <my-search :bgcolor="'skyblue'" :radius="3"></my-search> -->
     <my-search @click="gotoSearch"></my-search>
    <view class="scroll-view-container">
      <!-- 左侧的区域 -->
      <scroll-view scroll-y="true" :style="{height:wh+'px'}" class="left-scroll-view">
        <block v-for="(item,i) in cateList" :key="i">
          <view :class="['left-scroll-view-item',i===active?'active':'']" @click="activeChanged(i)">{{item.cat_name}}</view>
        </block>
      </scroll-view>
      <!-- 右侧的区域 -->
      <scroll-view scroll-y="true" :style="{height:wh+'px'}" :scroll-top="scrollTop">
      <view class="cate-lv2" v-for="(item2,i2) in cateLevel2" :key="i2">
        <!-- 二级分类标题 -->
        <view class="cate-lv2-title">/{{item2.cat_name}}/</view>
        <view class="cate-lv3-list">
          <!-- 三级分类的item项目 -->
          <view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
            <!-- 三级图片 -->
            <image :src="item3.cat_icon.replace('dev','web')"></image>
            <!-- 三级标题文本 -->
            <text>{{item3.cat_name}}</text>
          </view>
        </view>
      </view>
      </scroll-view>
    </view>
  </view>
</template>

<script>
 import badgeMix from '@/mixins/tabbar-badge.js'
 export default {
   mixins:[badgeMix],
    data() {
      return {
        wh: 0,
        //分类数据
        cateList: [],
        active:0,
        //二级分类数据
        cateLevel2:[],
        //滚动条
        scrollTop:0
      };
    },
    onLoad() {
      const sysInfo = uni.getSystemInfoSync()
      this.wh = sysInfo.windowHeight-50
      //获取分类数据
      this.getCateList()
    },
    methods: {
      //获取分类数据
      async getCateList() {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/categories')
        if (res.meta.status !== 200) return uni.$showMsg()
        this.cateList = res.message
        
        
        //为二级分类赋值
        this.cateLevel2=res.message[0].children
      },   
      activeChanged(i){
        this.active=i
        
        //重新为二级分类赋值
        this.cateLevel2=this.cateList[i].children
        //重置为滚动条0
        this.scrollTop=this.scrollTop===0?1:0
      },
      //跳转到商品类表页面
      gotoGoodsList(item){
        console.log(item);
        uni.navigateTo({
          url:'/subpkg/goods_list/goods_list?cid'+item.cat_id
        })
      },
      gotoSearch(){
        uni.navigateTo({
          url:'/subpkg/search/search'
        })
      }
    }
  }
</script>

<style lang="scss">
  .scroll-view-container {
    display: flex;
  }

  .left-scroll-view {
    width: 120px;
  }

  .left-scroll-view-item {
    background-color: #f7f7f7;
    line-height: 60px;
    text-align: center;
    font-size: 12px;

    &.active {
      background-color: #fff;
      position: relative;

      &::before {
        content: '';
        display: block;
        width: 3px;
        height: 30px;
        background-color: #c00000;
        position: absolute;
        top: 50%;
        left: 0;
        transform: translateY(-50%);
      }
    }
  }
  .cate-lv2-title{
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    padding: 15px 0;
  }
  .cate-lv3-list{
    display: flex;
    flex-wrap: wrap;
    .cate-lv3-item{
      width: 33.33%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      margin-bottom: 10px;
      image{
        width: 60px;
        height: 60px;
      }
      text{
        font-size: 12px
      }
    }
  }
</style>
